<ac-layer acFor="let ellipse of ellipses$" [show]="show" [context]="this">
  <ac-ellipse-desc props="{
        position: ellipse.position,
        semiMajorAxis:400000.0,
        semiMinorAxis:250000.0,
        height: 0
    }"></ac-ellipse-desc>
</ac-layer>
